• Country
• Netherlands

• Manufacturer / Brand
• Amroh NV (Radio Bulletin monthly), Muiden

• Year
• 1948–1950

• Category
• Sound/Video Recorder and/or Player

• Radiomuseum.org ID
• 91968

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 4

• Valves / Tubes
• EF22 EF50 EL3N AZ1

• Main principle
• Audio-Amplification; 3 AF stage(s)

• Wave bands
• - without

• Details
• Other Combination - see Notes

• Power type and voltage
• Alternating Current supply (AC) / 110; 125; 150; 220 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 16 cm = 6.3 inch

• Power out
• 4 W (unknown quality)

• Material
• Leather / canvas / plastic - over other material

• from Radiomuseum.org
• Model: Wiramphone 72001 - Amroh NV Radio Bulletin

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 380 x 240 x 420 mm / 15 x 9.4 x 16.5 inch

• Notes
• Wire recorder-gramophone player. USA made recorder-phono deck, Armour Research Foundation licence. Wire speed 24 inch/sec, phono speed 78 rpm. Max. recording time 60 min. Amplifier made by Amroh, case made by Terwijn & Zn, Koffer & Lederwarenfabriek Rotterdam. Phono cartridge Astatic L71A. Later variant 72002 has EF40 microphone amplifier instead of EF22

• Net weight (2.2 lb = 1 kg)
• 19 kg / 41 lb 13.6 oz (41.85 lb)

• Price in first year of sale
• 800.00 Dfl

• Literature/Schematics (1)
• -- Original-techn. papers.

• Author
• Model page created by John Hupse † 28.9.20. See "Data change" for further contributors.

• Other Models

• Here you find 237 models, 207 with images and 226 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Amroh NV (Radio Bulletin monthly), Muiden